H2H data updated: 2026-09-03 00:00 UTC
Hans Joachim Ploetz holds a 1–0 lead over Giuseppe Merlo in their ATP head-to-head. Across 1 main-draw meeting, Hans Joachim Ploetz leads 1–0 on clay. Most recently, Hans Joachim Ploetz won the 1968 Cannes round of 16 6-2 6-1.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Hans Joachim Ploetz | 6-2 6-1 | Giuseppe Merlo | Match data | Mar 22, 1968* | R16 | Cannes | ATP 250 | Clay |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hans Joachim Ploetz | #281 | #65 | 0 | 1,645 | 73 | 98 | 42.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Giuseppe Merlo | #185 | #158 | 0 | 1,540 | 10 | 15 | 40.0% | 0 | 0 | 0 | 0 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Hans Joachim Ploetz | Giuseppe Merlo | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1968 | 15–12 | 55.6% | — | 1,523 | 0 | 0 | 1968 | 7–10 | 41.2% | — | 1,484 | 0 | 0 |
| 1969 | 18–16 | 52.9% | — | 1,600 | 0 | 0 | 1969 | 1–2 | 33.3% | — | 1,464 | 0 | 0 |
| 1970 | 12–18 | 40.0% | — | 1,596 | 0 | 0 | 1970 | 0–1 | 0.0% | — | 1,449 | 0 | 0 |
| 1971 | 2–5 | 28.6% | — | 1,559 | 0 | 0 | 1972 | 1–1 | 50.0% | — | 1,467 | 0 | 0 |
| 1972 | 2–5 | 28.6% | — | 1,526 | 0 | 0 | 1973 | 1–1 | 50.0% | #177 | 1,481 | 0 | 0 |
| 1973 | 2–5 | 28.6% | — | 1,508 | 0 | 0 | — | — | — | — | — | — | — |
| 1974 | 5–9 | 35.7% | #95 | 1,563 | 0 | 0 | — | — | — | — | — | — | — |
| 1975 | 15–18 | 45.5% | #76 | 1,615 | 0 | 0 | — | — | — | — | — | — | — |
| 1976 | 2–10 | 16.7% | #185 | 1,514 | 0 | 0 | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Hans Joachim Ploetz | Giuseppe Merlo | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | ||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | ||
| 1968 | 5 | 4 | 9 | 55.6% | 8 | 5 | 13 | 61.5% | 0 | 2 | 2 | 0.0% | 2 | 1 | 3 | 66.7% | 1968 | — | — | — | — | 7 | 9 | 16 | 43.8% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 1969 | 4 | 4 | 8 | 50.0% | 8 | 7 | 15 | 53.3% | 3 | 2 | 5 | 60.0% | 3 | 3 | 6 | 50.0% | 1969 | — | — | — | — | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 1970 | 0 | 3 | 3 | 0.0% | 10 | 10 | 20 | 50.0% | 2 | 2 | 4 | 50.0% | 0 | 3 | 3 | 0.0% | 1970 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 1971 | — | — | — | — | 1 | 4 | 5 | 20.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | 1972 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 1972 | 1 | 1 | 2 | 50.0% | 0 | 1 | 1 | 0.0% | 1 | 3 | 4 | 25.0% | — | — | — | — | 1973 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 1973 | — | — | — | — | 0 | 1 | 1 | 0.0% | 2 | 4 | 6 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1974 | — | — | — | — | 5 | 8 | 13 | 38.5% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1975 | — | — | — | — | 14 | 17 | 31 | 45.2% | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1976 | 0 | 3 | 3 | 0.0% | 2 | 6 | 8 | 25.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 10 | 15 | 25 | 40.0% | 48 | 59 | 107 | 44.9% | 9 | 16 | 25 | 36.0% | 6 | 8 | 14 | 42.9% | Career | — | — | — | — | 10 | 14 | 24 | 41.7% | 0 | 1 | 1 | 0.0% | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Hans Joachim Ploetz | Giuseppe Merlo | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
| 1968 | 1524 | 101.0 | — | — | — | — | +24 | +27 | — | 46.0% | -0.57 | 4–1 (80%) | — | — | +0.31 | 1968 | 1484 | 103.1 | — | — | — | — | — | +21 | — | 46.2% | -0.28 | 3–2 (60%) | — | — | -0.02 |
| 1969 | 1601 | 114.3 | — | — | — | — | -8 | -13 | -51 | 50.0% | +0.09 | 7–5 (58%) | — | — | +1.53 | 1969 | 1464 | 96.5 | — | — | — | — | — | +18 | — | 40.0% | -0.40 | 1–1 | — | — | +0.10 |
| 1970 | 1597 | 116.7 | — | — | — | — | -108 | +21 | -49 | 37.7% | -0.62 | 4–2 (67%) | — | — | +0.09 | 1970 | 1450 | 98.0 | — | — | — | — | — | — | — | 33.3% | -2.00 | 0–1 | — | — | +0.16 |
| 1971 | 1559 | 105.2 | — | — | — | — | — | +5 | — | 37.5% | -1.58 | 0–1 | 0–1 | — | +0.29 | 1972 | 1468 | 101.9 | — | — | — | — | — | — | — | 50.0% | -0.75 | — | — | — | -0.10 |
| 1972 | 1526 | 106.1 | — | — | — | — | — | — | +20 | 31.6% | -1.37 | 1–2 (33%) | 1–1 | — | +0.13 | 1973 | 1481 | 97.2 | — | — | — | — | — | — | — | 40.0% | -1.40 | 1–0 | — | — | +0.06 |
| 1973 | 1508 | 106.9 | — | — | — | — | — | — | +4 | 12.5% | -2.37 | — | — | — | -0.48 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1974 | 1563 | 120.7 | — | — | — | — | — | +8 | — | 37.5% | -0.82 | 3–2 (60%) | 3–0 (100%) | — | -0.61 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1975 | 1615 | 117.7 | — | — | — | — | — | 0 | — | 44.7% | -0.47 | 6–4 (60%) | 4–5 (44%) | — | +3.22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1976 | 1515 | 102.4 | — | — | — | — | -53 | +34 | — | 22.6% | -1.74 | 1–2 (33%) | — | — | +0.60 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1645 | 115.7 | — | — | — | — | -18 | +9 | -18 | 40.4% | -0.69 | 26–19 (58%) | 8–7 (53%) | 108.8 | +3.04 | Career | 1540 | 100.0 | — | — | — | — | — | +21 | — | 44.3% | -0.51 | 5–4 (56%) | — | — | +0.83 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Zeljko Franulovic | 2 | 3 | 5 | Mar 29, 1970 | H2H |
| Ilie Nastase | 0 | 4 | 4 | Feb 14, 1975 | H2H |
| Geoff Masters | 1 | 2 | 3 | Jun 2, 1976 | H2H |
| Francois Jauffret | 0 | 3 | 3 | May 8, 1976 | H2H |
| Stan Smith | 0 | 3 | 3 | Aug 20, 1975 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Gerald Battrick | 1 | 1 | 2 | Apr 26, 1972 | H2H |
| Pierre Barthes | 0 | 1 | 1 | Jun 4, 1973 | H2H |
| John Paish | 1 | 0 | 1 | Jun 3, 1973 | H2H |
| Andrew Pattison | 0 | 1 | 1 | Apr 27, 1972 | — |
| Patricio Rodriguez Chi | 0 | 1 | 1 | Jul 21, 1970 | — |